Our verdict
The best time to visit Charleston is March
During the warmer months, temperatures in Charleston can rise to a maximum of 32℃ (90℉). The weather at night in the winter can get down to temperatures as low as 4℃ (39℉).
If you’re a sun-chaser and want to visit Charleston when the days are longest, you should visit in July. On average it rains the most days in August, making it the wettest month of the year. Although it’s the wet season, it can often rain a little bit during the day or evening but have fine weather for a majority of the day too, so don’t let this put you off.
To learn everything you need to know (and none of the stuff you don’t) about when to visit Charleston, keep reading below. Plus, you’ll find tools to help you get the best deals on travel and hotels too!
Quick links: Fast facts / Seasons / Average temperatures / Monthly climate / FAQs / Map
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Charleston seasons
Before you continue, it’s important to know when the seasons are in Charleston as they might be different to yours depending on where in the world you’re travelling from. Charleston is in the Northern Hemisphere, so the seasons fall during these months:
| Season | Months |
|---|---|
| Summer | June to August |
| Autumn/fall | September to November |
| Winter | December to February |
| Spring | March to May |
Average temperatures in Charleston
If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Charleston for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.
Charleston climate by month
If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Charleston for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.
Jump to:
Charleston in January
- Average temperature: 11℃ (51℉)
- Average high temperature: 14℃ (57℉)
- Average low temperature: 7℃ (45℉)
- Average humidity: 73%
- Average sunny days: 19 days
- Average rainfall: 36mm (1") over 10 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Charleston in January, make sure you pack a warm jacket or coat.
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Charleston in February
- Average temperature: 12℃ (54℉)
- Average high temperature: 16℃ (60℉)
- Average low temperature: 9℃ (48℉)
- Average humidity: 75%
- Average sunny days: 16 days
- Average rainfall: 51mm (2") over 11 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Charleston in February, make sure you pack a warm jacket or coat.
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Charleston in March
- Average temperature: 15℃ (59℉)
- Average high temperature: 18℃ (65℉)
- Average low temperature: 11℃ (53℉)
- Average humidity: 73%
- Average sunny days: 17 days
- Average rainfall: 56mm (2") over 12 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Charleston in March, make sure you pack a warm jacket or coat.
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Charleston in April
- Average temperature: 19℃ (67℉)
- Average high temperature: 23℃ (73℉)
- Average low temperature: 16℃ (60℉)
- Average humidity: 74%
- Average sunny days: 16 days
- Average rainfall: 72mm (3") over 13 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Charleston in April, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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Charleston in May
- Average temperature: 23℃ (74℉)
- Average high temperature: 26℃ (79℉)
- Average low temperature: 20℃ (68℉)
- Average humidity: 75%
- Average sunny days: 13 days
- Average rainfall: 73mm (3") over 16 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Charleston in May, make sure you pack t-shirts and light clothing.
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Charleston in June
- Average temperature: 27℃ (80℉)
- Average high temperature: 30℃ (86℉)
- Average low temperature: 24℃ (75℉)
- Average humidity: 75%
- Average sunny days: 7 days
- Average rainfall: 103mm (4") over 20 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Charleston in June, make sure you pack t-shirts and light clothing.
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Charleston in July
- Average temperature: 28℃ (82℉)
- Average high temperature: 31℃ (88℉)
- Average low temperature: 25℃ (77℉)
- Average humidity: 75%
- Average sunny days: 6 days
- Average rainfall: 118mm (5") over 23 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Charleston in July, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Charleston in August
- Average temperature: 28℃ (82℉)
- Average high temperature: 31℃ (87℉)
- Average low temperature: 25℃ (77℉)
- Average humidity: 76%
- Average sunny days: 4 days
- Average rainfall: 153mm (6") over 24 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Charleston in August, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Charleston in September
- Average temperature: 25℃ (78℉)
- Average high temperature: 29℃ (84℉)
- Average low temperature: 23℃ (73℉)
- Average humidity: 75%
- Average sunny days: 8 days
- Average rainfall: 127mm (5") over 18 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Charleston in September, make sure you pack t-shirts and light clothing.
Charleston in October
- Average temperature: 21℃ (70℉)
- Average high temperature: 24℃ (76℉)
- Average low temperature: 18℃ (64℉)
- Average humidity: 74%
- Average sunny days: 19 days
- Average rainfall: 79mm (3") over 11 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Charleston in October, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Charleston in November
- Average temperature: 15℃ (60℉)
- Average high temperature: 19℃ (66℉)
- Average low temperature: 12℃ (54℉)
- Average humidity: 74%
- Average sunny days: 18 days
- Average rainfall: 49mm (2") over 9 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Charleston in November, make sure you pack a light jumper or hoodie.
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Charleston in December
- Average temperature: 13℃ (55℉)
- Average high temperature: 16℃ (61℉)
- Average low temperature: 10℃ (49℉)
- Average humidity: 78%
- Average sunny days: 18 days
- Average rainfall: 108mm (4") over 11 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Charleston in December, make sure you pack a warm jacket or coat.
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